Calculating-machine.



J. BRIGKE GA ATING MA 1?.

A PPPPPP TI N IIIIII ARJB. 1909.

943,514. Patented Dec. 14, 1909. 3 SHEETS-SHEET 1.

uoohunhboohnooooooon EH I J. BRIGKEN. CALCULATING MACHINE. APPLICATION FILE MAR. 18. 1909.

943, 5 1 4. Patented Dec. 14, 1909.

3 SHEETSSHEET 2.

yafin 51404212 (ByQrZzwe/U J. BRIGKEN.

GALOULATING MACHINE.

APPLICATION FILED MAR.18, 1909.

943,514. Patented Dec. 14, 1909.

3 SHEETSSHEET 3.

G/wumfar: pin 3 T'Z'CZCETIZ r @Zmoe/u A UNITE STATES PAIrENT onn on.

JOHN BRICKEN, OF CHICAGO, ILLINOIS, ASSIGNOR. BY DIRECT AND MESNE ASSIGN- MENTS, OF ONE-THIRD IO HARRY MARKS, OF CHICAGO, ILLINOIS, AND ONE-THIRD TO REUBEN MARKS, OF DES MOINES, IOWA.

CALCULATING- ACHINE.

Patented Dec. 14, 1909.

Application filed March 18. 19"). Serial No. 484,078.

To all whom it may concern:

Be it known that I, J on): Bmcnnn, a subect of the Emperor of Russla, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful lmprovement 1n Calculating Machines, of which the following is a specification.

' My invention relates to calculating mato the position proper for multiplying by the factor desired. As a result of my present invention it is impossible to shift the keyboard by merely depressing a key.

The object of my invention is accomplished panying. drawings, in which:

Figure 1 is a plan view of the complete machine. Fig. 2'is a side sectional elevation. Fig. 3 is a front elevation of the machine, portionof the casing being removed to-disclose the inner mechanism. Fig. 4 is a perspective view of the shiftable key-board.

Similar numerals refer to similar parts throughout the several views.

Inasmuch as the shiftable key-board, the keys mounted thereon and themechanism operated said keys are fully shown and described in my prior patent above referred to, itwill be suflicient in the present applicationto statethat the main figure keys 10 are vertically. movablein the horizontally shiftable carriage 11 and are adapted when depressed toactua-te their respective differential members 12 rigidly secured to the rock shaft 16, thus producing a differential movement in said rock shaft which is imparted to the totalizing mechanism indicated at the right. portion of Fig. 2. In this machine as in the prior one, a given figure key will produce different multiplications depending upon the position to which the keyboard or carriage 11 is shifted.

In the construction selected to illustrate my present improvement the carriage .is shifted by means of links 15 connected at one end to the keyboard and at the other end rigidly secured to the rock shaft 16. Said rock shaft is journaled in the sides of by the mechanism illustrated in the accomthe casing 17 and has arms 18 rigidly secured thereto in position to be engaged by the factor keys 19. Said factor keys are vertically movable, being guided preferably.

by the suitably apertured top of the casing 17 and by a bracket 20 secured to the front of the casing as shown in Fig. 2. Said keys are normally held in raised position by means of coiled springs 21 which encircle the stemson their respective keys 19, one end of each spring hearing by preference against the bracket 20 and the-other end against-a pin 22 secured to the spindle. The downward movement of the factor keys is limited by stop pins 23 fixed in the side of the key stem as shown in Fig. 2.

"The parts are so constructed that when any factor key is depressed it will contact its respective arm 18 and produce the proper amount of rotation in the'rock shaft 16 to bring the key-board 11 to proper position above the differential members 12. For example, if the factor key 5 is depressed, the key-board 11 will be brought to the position where the figure keys 1Q in descending will contactthe differential inembers 12 at. the proper point to produce multiplication by 5. After a factor key has been depressed the carriage will be returned to normal position by means of a spring 26 one end of which is secured to the keyboard 11 and the other end to the casing 17 as best shown in Fig. 2.

Eight factor the necessary shifting movement of the keyboard. 'i.\ccording to the present design the spring 26 normally holds the key-board at the point where simple addition or subtraction will result from the operation of the figure keys 10 and hence it is unnecessary to proyide a 1 factor key.

In operation, if the operator wishes to perform simple addition or subtraction he operates the figure keys 10 in the manner described in the aforesaid application. If he desires to multiply by any given factor,

keys are sufiicient to produce for instance four the operator will first As a result of my present invention it is unnecessary for the operator-to manually shift the key-board or to exercise any care to see that the key-board is shifted to proper position. All. that is necessary is forhim to depress the proper factor key and hold it depressed whilehe manipulates the figure keys in the manner described.

What I claim as new and desire to secure by Letters'Patent, is:

, 1. A calculating machine having figure keys and factor keys for shifting sald figure keysto different positions to thereby prod'uce multiplication by different factors.

2. In a calculating. machine, carrying mechanism, differentlal mechan sm for operating the same, figure keys'for operating said differential .mec'hanism, and. key conelections for-shifting said keys relatively. to

said differential mechanism for the described. 7 a

.3. In a ,calculatin machine, computin mechanism, differential m'embers connecte thereto for operating the same,'figure'keys for operating said differential members, said differential members being so constructed as to produce different effects upon'the compurpose puting mechanism depending upon the p01 ing said rotatable member.

mechanism, difierential members connecte sition of the figure keys relatively to said differential members, a shiftable key-board \vherein'said figure keys are mounted,- arotatable member. connected to saidke'y-board for shifting said keys,-and means for rotat- 4. In a calculating machine, jc-oi nputin thereto for operating the same, figure keys shiftin said rock shaft.

for .operating'said differential members, said diffe arential members being so constructed-as 40 to produce different effects upon the computing mechanism dependi'no .upon theipositioirof the figure keys re atively to said differential members, a shiftable key-board wherein said figure keys'are mounted, a rock shaft connected to said ke -board for g said keys: and means ;for rotating 5. In a calculating, machine, computing" v mechanism, differential members connected v as to produce differenteffects upon the com- I thereto for operating the same, figure keys for operating sald 'differentlal members, said differential members being so constructed puting mechanism depending. upon the position of the figure keys relatively to said diftion of the finger keys relatively to said dif ferentialv members, a shiftable key-board wherein said figure keys are'mounted, a rock' shaft connected to said key-board for shifting said figure keys and arms on said rock shaft for rotating the same, and factor keys operative upon said arms for rotating said rock shaft.

7,. In a calculating machine, eomputin mechanism, differentlal members connecteo thereto. for operating the same, figure keys for operating said differential members, said differential members being so constructed as to produce different effects upon the computing mechanism depending upon the posi tion'of the figure keys relatively to said differential members, a shiftable key-board wherein said figure keys are mounted, a rock .shaft connected to'said key-board for shifting said key-board and the fi ure keys in one direction, a spring for shi ting said keyboard in the opposite direction and key operated means for operating said rock shaft.

8. In a calculating machine, the combina tion of a totalizer, actuatin means therefor including differential mem ers, figure keys for operating said difierential members and .ashi-ftable key-board for shifting said figure keys relatively to said difierential n'iembers, the parts being so constructed that the figure keys produce different effects upon the totali-zerdepending upon the position of the figure keys relatively to said differential members, a spring for urging said key-board in one direction, a manually operated rock shaft for urging said key-board in the opposite direction and connections between said rock shaft and. key-board substantially as described.

I JOHN BR'ICKEN. IVitnesses:

- HOWARD M.-Cox,

C. J. CHRIs'roFrEL. 

